Five key questions: who overruled decision to deny Mandelson security clearance?

Ministers and civil servants face scrutiny after revelation Foreign Office overruled vetting procedure for US ambassador appointment

Revealed: Mandelson failed vetting but Foreign Office overruled decision

Officials debate withholding Mandelson vetting documents from parliament

The revelation that Peter Mandelson failed his security vetting clearance, only for the decision to be overruled by the Foreign Office so he could take up his post as ambassador to the US, raises a number of questions.

According to multiple sources, Mandelson was initially denied clearance in late January 2025 after a developed vetting process, a type of a highly confidential background check carried out by UK Security Vetting (UKSV), a division of the Cabinet Office.